Sheet-metal box.



' G. T. WOOTI'EN & A. P. RICHARDSON.

SHEET METAL BOX. APPLICATION FILED JULY 19. 1907.

Patented Feb. 1, 1910.

2 SHEETS- 8113111 1.

O."T. WOOTTEN &'A. P. RICHARDSON;

SHEET METAL Box. APPLICATION 'I'ILBDJ'ULY 19. 1901. 948,122, PatentedFeb. 1,1910; v

WITNESSES 4 Q m on;

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UNITED STATES. PATENT OFFICE.

mains "r. woo'rmnn AND arm/res r. nionannsoiv, or IHILADELIPHIA, PENN-sxLvAma; SAID woo'rrnn assrenon 'IO SAID RIGHARIDSON.

srIEET METAL BOX.

To all whom it may concern:

Be it known that we, CHARLES T. Woo'r- TEN and ARrnMAs P. RICHARDSON,citizens of the United States, residing in the city and county ofPhiladelphia, State of Pennsyl- Vania, have invented a new and usefulSheet-Metal Box, of which the following is a specification.

Our invention consists of a sheet metal box composed of a bottom andsides, having its corners closed by specially constructed lap-jointscomposed normally of portions of the box Where the corners are formed,

1 i turned-in and curled laterally on each other,

and the terminals of the sides above said lap-joints being connected. byother lapjoints, whereby the endsof the sides of the box are firmlyconnected and the bottoms of the corners thereof are hermeticallysealed, thus preventing the entrance of a1r and moisture into the box atsaid corners,

and the employment of solder is avoided said joint furthermore being atthe sides of the box adjacent to the corners, portions of the materialwhich comprise said joints being deflected inwardly so that the exteriorof the joints are flush with the sides of the box, whereby said sidesare uniformly rightlined from corner to corner of the box.

For the purpose of explaining the invention, the accompanying drawingsillustrate a satisfactory reduction of the same to practice, but theimportant instrumentalities thereof may be varied, and so it is to beunderstood that the invention is not limited to the specific arrangementand organization shown and described.

Figure 1 represents a perspective View of a box embodying our invention.Fig. 2 represents a horizontal section of a portion of the box taken onthe line y-y, Fig. 1. Fig. 3 represents a perspective view of a portion,showing steps in the formation of the lapjoints of the box. Fig. 4represents a lonitudinal section of a portion at the corner oint,enlarged. Fig. 5 represents a plan view of the blank from which the boxembodying the invention is made.

S1milar letters of reference indicate corresponding parts inthe figures.

Referring to the drawings :A designates a sheet metal box, which iscomposed of the bottom B, and sides C, the terminals of adjacent sidesbeing connected by lap-joints D.

In carrying out our invention, we take a Specification of LettersPatent.

Application filed July 19, 1907.

Patented Feb. 1,1910.

Serial No. 384,514.

blank A of sheet metal of substantially quadrilateral form and removethe corners therefrom, leaving right-angular recesses A in lieu thereof,it being noticed that portions A of the metal of the blank remainbetween the angles of said recesses and the border lines A of whatsubsequently comprises the bottom B of the box. The blank is bent up onsaid lines A and the ends of the portions from which the sides C areformed approach each other as tongues E, E, see Fig. 3. The portions Aof the blank are curled or bent laterally in said Fig. 3, the resultantcurls or bends-J joining the lower ends G, G of the tongues E, as insaid figure. Said curls or bends are then further bent around and withthem said tongues E, producing the double lap-joints J, K at the bottomand the single lapjoints D above the same, the lap-j oints beingadjacent to the corners of the box. The several lap-joints are thencompressed and so tightly closed, it being seen that portions of saidjoints are deflected inwardly so as to enter the box while the exteriorof the box at the places of occupation of the lapjoints are fiush withthe adjacent portions of the sides of the box, so that said sides arecomparatively unbroken and right-lined from corner to corner of the box,as at E, Fig. 1, and the sides thus present no projec tions or obstaclesto the lid, while the corners are hermetically closed.

Attention is especially directed to the curls or bends J, which areprimarily formed of the portions A of the blanks as has been stated,whereby the extreme lower cornersL of said curls orbencls andconsequently of the box are integral with the bottom and sides of thebox and are without openings or slits which otherwise would requiresoldering to close them and there can be no leakage thereat.

Having thus described our invention, what we claim as new and desire tosecure by Letters Patent, is

1. A sheet metal box composed of a bottom and sides, and lap jointsjoining the latter at the corners of the box, said joints being on theexterior of said sides and flush therewith, said sides beingcomparatively right-lined from corner to corner, the lower ends of saidjoints being integrally closed by adjacent portions of the bottom andsides of the box.

2. A sheet metal box composed of a bot on the exterio r o'f said sides,and portions tom, sides and lap-joint corners the lap: E of the materialcomprising said joints being joints being onthe exterior of the box, anddeflected inwardly, whereby the exterior of 15 the bottom of the latterbeing integrally the joints are flush with the'sides of the box,

5 closed by the adjacent portions of the bottom I the lower ends of saidjoints being bent to and sides, said material being curledlaterjp'rodnce double lap joints adjacent the corally on its side, thelower ends of said'joints ners of the box. 7 being bent to producedouble lap joints ad- 1 CHARLES T. WOOTTEN. jacent the corners of thebox. ARTEMAS P. RICHARDSON.

10 3. A sheet metal box composed of a bot- 'Witnesses:

tom, sides, and lap joints joining the latter JOHN A. \VIEDERSHEIM,

at the corners of thebox, said joints being I 'HARRY G. DALTON.

